Frame-mounting.



obiifiTifisAsTEgf I FRAME MOUNTING. APPLICATION FILED JAN. 22 1906. I 89.9 596 Patented Sept. 29, 1908.

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rrnn STATES PATENT OFFICE.

OLAF HETLESAETER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-GHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A GORPORATION OF NEW JERSEY.

FRAME-MOUN TING.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Application filed January 22, 1906. Serial No. 297,205.

waukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in A-Frame Mountings, of which the following is a specification. I

This invention relates to mounting of pivoted members.

This invention has utility when applied to mounting an A-frame and to mounting a steadying arm, the A-frame serving as a pivotal support for the swingable working member, while the steadying arm limits the rocking movement which shifting of the working member might cause. I

Referring to the drawings: Fi ure 1 is a side elevation; Fig. 2 is an end e evation of an embodiment of the mounting; Fig. 3 is a detail of the mounting; and Fig. 4 is a section on the line IV-IV of Fig. 3.

The Aframe 1 is connected by the pin 2 to the rockable mounting 3. The mounting 3 rests in cradles or bearing blocks 4. The rockable mounting 3 is held in osition on the bearing blocks 4 by means 0 U-bolts 5 extending through the car body 6 on which the blocks 4 are mounted. Pivotally mounted on the pin 2 which connects the A-frame 1 and mounting 3, is the steadying arm 7. As shown, the steadying arm 7 has the tension bar 8, which, when in working position, braces the arm 7 relative to the car body 6. The tension bar 8, when in working position, is connected to the car body by the remov able pin 9. To bring the steadying or jack arms 7 up over the car body, as'in moving from place to place, the pin 9 is Withdrawn and the pivota mountin of the arm 7 thereby permitsswinging of t e arm 7 about the pivot 2 to the dotted line position shown in Fig. 2. From the particular mounting shown herewith, when the A-frame is lowered down, as in shipment, the jack arms will also be moved in this second plane, taking a position shown by dotted lines in Fig. 1.

ThlS invention relates s ecifically to a mounting for the A-frame of a steam shovel or other form of excavator, derrick or the like, which is mounted upon a car or cart body, the intention being to provide a mounting by which the steadying arms will support the A-frame and the thrusts transmitted therefrom independently of the car or cart u on which the A-frame is mounted, thereby re ieving the car or cart from those severe strains to which the ordinary forms and con structions of this class of apparatus subject them.

In its essential features the construction embodying this invention and disclosed by this specification consists in providing a frame with supporting bearings or the equivalent upon a car in order that the parts may be retained in position for transportation without disassembling them, and in providing steadying arms by which the A-frame is adapted to be supported from the ground or blocking, as the case may be, when the apparatus including the A-frame as a part of its structure is in use.

It must bedistinctly borne in mind that the steadying arms 7 disclosed by the drawings accompanying this s ecification are not steadying arms in the or 'nary sense of the term.

As a steam shovel is ordinarily mounted upon a car for example, side stresses put upon one leg or the other of the A-frame tend to twist or turn the car, and the steadying arms are used to keep the car from turning, the strains and stresses in all such structures known to me being transmitted from the A- frame through the car body to the steadying arms, or through a casting, or an equivalent device secured to the car body.

In the construction herein disclosed, the steadying arms 7 are in effect continuations of the legs of the A-frame, the s ecific structure disclosed being that best a apted to the conditions under which it is required I arm, one pin serving for both. The assemblage is such that with a minimum number of parts, a compact, strong and eflicient mounting is produced.

What is claimed and it is desired to secure by Letters Patent is:

1. A frame, a rockable mounting therefor and an arm on the mounting.

2. A frame a rockable mounting therefor, and an arm pivoted on the mounting.

3. A frame, an arm, a mounting, and a pin for connecting the frame, arm and mounting.

4. The combination with a car, of an A- frame provided with two downwardly diverging legs, a mounting, two steadying l i l l arms, and two pins, one pin uniting an end of one steadying arm with one end of the mounting and one leg of the A-frame, the other pin uniting an end of the other steailying arm with the other end of the mounting and the other leg of the A-framc, and means for uniting said steadying arms.

In testimony whereof I affix my signature in presence of two witnesses.

OLAF l l ETLESA h) ER.

Witnesses GEO. E. KIRK, G. F. Di: VVEIN. 

